How to turn off the GLX acceleration?

Dear Sir / Madam, I need to use GView (a software for molecules visualization constructed by Gaussian). An error occurs when I use the GView through cygwin/X. This error is that the GView appears in my desktop. However, when I try to display a molecule, no molecule is observed in the window of

error in running startx

Dear Sir / Madam, After I followed the instructions in Cygwin/X web site to install the cygwin/X, the error occured during running startx. Patrick [EMAIL PROTECTED] ~ $ cp /etc/X11/xinit/xinitrc ~/.xinitrc Patrick [EMAIL PROTECTED] ~ $ cd /usr/X11R6/bin startx Welcome to the XWin X Server